Comparing Appearance, Relative Density, and Solubility In this task, you’ll observe and compare the appearance, relative density, and solubility of common household materials in water. Part A Observe the appearance of each material before it is mixed, its relative density, and how well it dissolves in water. Baking Soda Baking Powder Salt Sugar Flour Vinegar Cooking Oil Part B What observation about baking powder suggests that it is a mixture of substances?

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter